I created these bumpers for my Roger Charger V4 because it will be in my backpack while riding my EUC. It is heavy and has some delicate areas that I was concerned for. Namely the adjustment knobs and the PCB interface as it is a converted industrial power supply. My proto design was kind of boring looking so my I made it a little more exctiting to look at. Since it is loud and people will be looking at it, might as well get some oooooohs and aaaaahs. These are inteded to be printed in TPU the profile works great for Amolen and Overture brand TPUs